/*
 * Copyright 2007-2009 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.paoding.rose.web.impl.thread;

import java.util.Locale;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import net.paoding.rose.Rc;
import net.paoding.rose.web.Invocation;
import net.paoding.rose.web.annotation.Message;
import net.paoding.rose.web.msg.StringManager;
import net.paoding.rose.web.msg.StringManagerAdapter;
/**
 * 
 * @author zhiliang.wang
 *
 */
public class UserProfile implements WebInvocation {

	@Override
	public Object invoke(Invocation invocation) throws Exception {
		invocation.getResponse().setLocale(
				getUserLocale(invocation.getRequest(), invocation.getResponse()));
		setMessageObject(invocation);
		return null;
	}

	protected Locale getUserLocale(HttpServletRequest request, HttpServletResponse response) {
		Locale locale = response.getLocale();
		if (locale == null) {
			locale = request.getLocale();
		}
		if (locale == null) {
			locale = Locale.getDefault();
		}
		return locale;
	}

	protected Object getMessageObject(Invocation invocation) {
		Class<?> controllerClass = invocation.getControllerClass();
		String packageName = controllerClass.getPackage().getName();
		StringManager stringManager = StringManager.getManager(
				packageName, invocation.getResponse().getLocale());
		return new StringManagerAdapter(stringManager);
	}

	private void setMessageObject(Invocation invocation) {
		Object messageObject = getMessageObject(invocation);
		Message message = invocation.getMethod().getAnnotation(Message.class);
		if (message == null) {
			message = invocation.getControllerClass().getAnnotation(Message.class);
		}
		if (message == null) {
			Rc.model().add("msg", messageObject);
		} else {
			Rc.model().add(message.key(), messageObject);
		}
	}
}
